Originally Posted by
Aloomatar
Regarding the one-leg companion upgrade: Does it work when you're on different itineraries, but share the same final leg? Could the upgrade be used on that final leg?....
If you are on the same flight, you can request an upgrade for the companion. It is different from being on the same PNR. If on separate PNR, you can not request in advance, but at the gate and the companion's waitlist will be at the bottom of your status group -- essentially as if a $0 fare.